Internal Communication Systems in Living Organisms

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Questions and Answers

What is the main function of the Nervous System in the body?

  • Regulation of the endocrine system
  • Coordination of various body systems (correct)
  • Memory storage and reasoning abilities
  • Control of voluntary body activities only

How does the Nervous System differ from the Endocrine System in terms of response speed?

  • Endocrine System responds rapidly
  • Endocrine and Nervous Systems have similar response times
  • Nervous System responds slowly
  • Nervous System responds rapidly (correct)

What is the role of the Endocrine System in the body?

  • Reacting to external stimuli
  • Coordination of organs and tissues
  • Control of voluntary actions
  • Regulation of internal environment (correct)

How do cells and organs in the body work according to the text?

<p>Coordinated for various functions at specific times (D)</p> Signup and view all the answers

What is the primary means by which outside stimuli are perceived by the body?

<p>Nervous system (B)</p> Signup and view all the answers

Which statement accurately describes neurology based on the text?

<p>Study of nervous system and receptor organs (B)</p> Signup and view all the answers

Which region of a neuron is highly specialized to conduct nerve impulses away from the cell body?

<p>Axon (C)</p> Signup and view all the answers

What is the function of myelin sheath around an axon?

<p>Increases the speed of nerve impulse conduction (B)</p> Signup and view all the answers

Which cell organelle is absent in nerve cells?

<p>Centrosome (B)</p> Signup and view all the answers

What is the role of dendrites in a neuron?

<p>Highly branched to receive nerve impulses and conduct them towards the cell body (D)</p> Signup and view all the answers

Which type of neuron transmits impulses from receptors to the brain and spinal cord?

<p>Sensory (Afferent) neurons (C)</p> Signup and view all the answers

What differentiates a unipolar neuron from other types of neurons?

<p>Fiber immediately divides into proximal and distal fibers with no dendrites (B)</p> Signup and view all the answers

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